package fip.map.br;
	
	public class StatisticsDisplay implements Observer, DisplayElement {
		private float maxTemp = 0.0f;
		private float minTemp = 200;
		private float tempSum= 0.0f;
		private int numReadings;
		private WeatherData weatherData;

		public StatisticsDisplay(WeatherData weatherData) {
			this.weatherData = weatherData;
			weatherData.registrerObserver(this);
		}

		public void update(float temp, float humidity, float pressure) {
			tempSum += temp;
			numReadings++;

			if (temp > maxTemp) {
				maxTemp = temp;
			}
	 
			if (temp < minTemp) {
				minTemp = temp;
			}

			display();
		}

		public void display() {
			System.out.println("Avg/Max/Min temperature = " + (tempSum / numReadings)
				+ "/" + maxTemp + "/" + minTemp);
		}
	}
